The Bestseller by Olivia Goldsmith (1996)

Poor Olivia Goldsmith.  She wrote some fun books, and some kind of lame books.  But The Bestseller is terrific fun.  A great expose of the publishing industry of the 80s/90s, it's dishy and gossipy.  It's also super fun to play "name that author" with this book.  So much thinly veiled author dirt is spilled!